CN105819733B - Impervious additive of a kind of concrete anticracking and preparation method thereof - Google Patents
Impervious additive of a kind of concrete anticracking and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/60—Agents for protection against chemical, physical or biological attack
- C04B2103/65—Water proofers or repellants
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Abstract
The present invention relates to a kind of impervious specialist additive of concrete anticracking, its constituent is in parts by mass：9 11 parts of carboxyl class material, carboxyl class material are mixed by sodium carboxymethylcellulose and carboxylated Graphene, and sodium carboxymethylcellulose is 1 with the mass ratio of carboxylated Graphene:7.2～8.2, and sodium carboxymethylcellulose and carboxylated Graphene are the powder that granularity is between 500 600 mesh；46 parts of oxide powder and zinc, its granularity are 300 400 mesh；45 parts of activated carbon, the activated carbon choice of powder shape, its granularity are 200 300 mesh；Nanoscale is slight 40 42 parts of dicalcium powder, its granularity is 1,000 1200 mesh；65 68 parts of polyester fiber, its length are 10 15mm, a diameter of 20 25 m.It is an advantage of the current invention that：The impervious specialist additive of the concrete anticracking greatly strengthen cracking resistance and the anti-permeability performance of concrete, also substantially increase the waterproofing protection phase to building.
Description
Technical field
The invention belongs to building material technical field, the impervious additive of more particularly to a kind of concrete anticracking, further relate to this
The preparation method of the impervious specialist additive of concrete anticracking.
Background technology
Concrete, referred to as " concrete ", typically refer to make Binder Materials with cement, and sand, masonry gather materials, with water by a certain percentage
Coordinate, agitated gained.Concrete has abundant raw material, cheap, the feature of simple production process so as to range ten
Divide extensively, not only used in various civil engineerings, be exactly shipbuilding industry, mechanical industry, the exploitation of ocean, geothermal engineering etc., mix
Solidifying soil is also important material.But concrete material is due to the characteristic of self structure, in use especially for those
Underground and aouatic structure engineering often occur Seepage, and this has a strong impact on and constrain the application of concrete material.
Therefore, the various additives about improving and improving concrete material impermeability are constantly suggested, as early stage
Some are expanded by producing to improve the inorganic water-proof agents such as calcium chloride, the iron chloride of concrete anticracking impermeability, in addition with
Some organics, such as organosilicon, aliphatic acid etc.；But these waterproofing agent one side waterproof abilities are limited, it is impossible to persistently.
Therefore, some new more effective waterproof additives are expected to be developed and apply.
Content of the invention
The technical problem to be solved in the present invention be provide one kind can make concrete anticracking, anti-permeability performance strengthen and can improve right
The impervious additive of the concrete anticracking of the waterproofing protection phase of building, also provides a kind of concrete anticracking impervious specialist additive
Preparation method.
For solving above-mentioned technical problem, the technical scheme is that：A kind of impervious additive of concrete anticracking, its innovation
Point is：The constituent of the additive is in parts by mass：
Carboxyl class material 9-11 part；
Oxide powder and zinc 4-6 part；
Activated carbon 4-5 part；
Nanoscale is slight dicalcium powder 40-42 part；
Polyester fiber 65-68 part；
Wherein, described carboxyl class material is mixed by sodium carboxymethylcellulose and carboxylated Graphene, and carboxymethyl is fine
The plain sodium of dimension is 1 with the mass ratio of carboxylated Graphene:7.2～8.2, and sodium carboxymethylcellulose is grain with carboxylated Graphene
Degree is the powder between 500-600 mesh；The granularity of described oxide powder and zinc is 300-400 mesh；Described activated carbon selects powder
Last shape, its granularity are 200-300 mesh；The granularity of described nanoscale is slight dicalcium powder is 1000-1200 mesh；Described polyester is fine
Dimension, its length are 10-15mm, a diameter of 20-25 m.
Further, in described carboxyl class material, sodium carboxymethylcellulose is 1 with the mass ratio of carboxylated Graphene:
7.7.
A kind of preparation method of the impervious additive of above-mentioned concrete anticracking, its innovative point are：The preparation method bag
Include following step：Will be slight with carboxylated Graphene, oxide powder and zinc, activated carbon and nanoscale for the sodium carboxymethylcellulose for measuring
Dicalcium powder is sent into mixer and is mixed, and metering as needed is assigned in packaging bag, then the metering of required polyester fiber is put into
Install sealing in pulvis bag and be finished product.
In the present invention, the mechanism of action of additive is：The impervious additive of concrete anticracking of the present invention can be fully filled very well
Microvoid between concrete interface, strengthen interface adhesion, keep water slow decomposition, reduce hydro-thermal quick on
Rise, and so that the heat of hydration of generation is discharged from concrete, activate, strengthen the activity of cement, flyash and aggregate so as to it
Between compatibility strengthen, fine so as to combined in whipping process, it is ensured that gelling thing construction process of vibrating in not with aggregate
Isolation, improve concrete from close property, while improving the etch resistant properties of reinforcing bar；And can strengthen and limit concrete and cause because of various stress
Crack produces, and forms complete netted system in global formation concrete, improves and changes agent on crack resistance of concrete difference variation because of climate temperature
Performance.
It is an advantage of the current invention that：The carboxyl class material that the impervious additive of the concrete anticracking of the present invention is adopted, which is by carboxylic
Sodium carboxymethylcellulose pyce and carboxylated Graphene are mixed, microvoid that can be on fill concrete interface, can be strengthened between interface
Adhesion, absorb the hydro-thermal during part concrete formation；Using oxide powder and zinc, in the pre-hardening process of concrete
In, and water and acid, alkaline matter neutralization, little by little separately hydrogen and oxygen, making gas, discharging, while taking away from concrete
The part heat of hydration, reduces the generation of temperature shrinkage fracture；Using activated carbon can neutralize KO2、NaO2Generation, activation cement,
The activity of flyash and aggregate so as between compatibility strengthen, so as in whipping process can in conjunction with fine, it is ensured that be gelled
Thing in construction process of vibrating not with aggregate segregation, improve concrete from close property, while improving the stainless property of reinforcing bar；Using
Nanoscale is slight dicalcium powder, can further enhance concrete activity, improve the compactness of concrete, from filling, because of internal gas when concrete is molded
The capillary porosity of generation, improves the anti-carbonation properties in concrete later stage；Using polyester fiber, strengthen limiting concrete and cause because of various stress
Crack generation, form a complete soft structure network structure system in global formation concrete, and by fiber by hydro-thermal
Pass, improve because of the ability of climate temperature change concrete Anti-temperature difference change；Thus, the impervious interpolation of the concrete anticracking of the present invention
Agent greatly strengthen the cracking resistance of concrete and anti-permeability performance, also substantially increase the waterproofing protection phase to building.
Specific embodiment
The following examples can make professional and technical personnel that the present invention is more fully understood, but not therefore by this
Bright it is limited among described scope of embodiments.
Embodiment 1
First in parts by mass：By 1.1 parts of sodium carboxymethylcelluloses, 7.9 parts of carboxylated Graphenes, 6 parts of oxide powder and zincs, 5
Part activated carbon, 42 parts of nanoscales are slight, and dicalcium powder sends into mixer is sufficiently mixed, and makes powder；Wherein, wherein, carboxylated
The granularity of Graphene is 500 mesh, and the granularity of oxide powder and zinc is 300 mesh, and the granularity of activated carbon is 200 mesh, nanoscale is slight coarse whiting
The granularity of powder is 1000 mesh.
Then above-mentioned powder is divided into N part according to the quality of individual packaging bag to be evenly distributed in each packaging bag respectively；
Finally, then by the polyester fiber that total amount is 68 mass parts it is divided into N part, evenly distributes after weighing to installing powder
In packaging bag, finished product is made in sealing, and wherein, the length of polyester fiber is 10mm, a diameter of 20 m.
Embodiment 2
First in parts by mass：By 0.98 part of sodium carboxymethylcellulose, 8.02 parts of carboxylated Graphenes, 6 parts of oxide powder and zincs,
5 parts of activated carbons, 42 parts of nanoscales are slight, and dicalcium powder sends into mixer is sufficiently mixed, and makes powder；Wherein, wherein, carboxyl
The granularity of graphite alkene is 500 mesh, and the granularity of oxide powder and zinc is 300 mesh, and the granularity of activated carbon is 200 mesh, and nanoscale is slightly weighed
The granularity of calcium powder is 1000 mesh.
Then above-mentioned powder is divided into N part according to the quality of individual packaging bag to be evenly distributed in each packaging bag respectively；
Finally, then by the polyester fiber that total amount is 68 mass parts it is divided into N part, evenly distributes after weighing to installing powder
In packaging bag, finished product is made in sealing, and wherein, the length of polyester fiber is 10mm, a diameter of 20 m.
Embodiment 3
First in parts by mass：By 1.03 parts of sodium carboxymethylcelluloses, 7.97 parts of carboxylated Graphenes, 6 parts of oxide powder and zincs,
5 parts of activated carbons, 42 parts of nanoscales are slight, and dicalcium powder sends into mixer is sufficiently mixed, and makes powder；Wherein, wherein, carboxyl
The granularity of graphite alkene is 500 mesh, and the granularity of oxide powder and zinc is 300 mesh, and the granularity of activated carbon is 200 mesh, and nanoscale is slightly weighed
The granularity of calcium powder is 1000 mesh.
Then above-mentioned powder is divided into N part according to the quality of individual packaging bag to be evenly distributed in each packaging bag respectively；
Finally, then by the polyester fiber that total amount is 68 mass parts it is divided into N part, evenly distributes after weighing to installing powder
In packaging bag, finished product is made in sealing, and wherein, the length of polyester fiber is 10mm, a diameter of 20 m.
Table 1 below is sodium carboxymethylcellulose and carboxylated Graphene mass ratio contrast form in embodiment 1-3：
| Carboxyl class material | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Sodium carboxymethylcellulose | 1 | 1 | 1 |
| Carboxylated Graphene | 7.2 | 8.2 | 7.7 |
For the performance of the impervious additive of testing example 1-3 concrete anticracking, the concrete anticracking of each embodiment is impervious
Weight of additive adds 1kg finished product additive according in per cubic metre of concrete, then concrete each sample is tested,
Performance test results are shown in Table 2.
The performance test data of the impervious additive of 2 embodiment 1-3 concrete anticracking of table
| Pilot project | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Seepage-resistant grade | 18MPa | 17MPa | 18MPa |
| Infiltration height | 4.5cm | 4.5cm | 4cm |
| Cracking resistance grade | >=one-level | >=one-level | >=one-level |
| Crack reduces coefficient | 77% | 76% | 78% |
| The waterproofing protection phase | 73 years | 73 years | 75 years |
Conclusion：As can be seen from the above table, the impervious additive of the concrete anticracking of embodiment 1-3, seepage-resistant grade P=17-
18MPa, in 4-4.5cm, cracking resistance grade >=one-level, it is 76%-78% that crack reduces coefficient to infiltration height, the additive of the invention
The waterproofing protection phase is 73-75；Thus, the impervious additive of the concrete anticracking of the present invention greatly strengthen the cracking resistance of concrete and
Anti-permeability performance, also substantially increases the waterproofing protection phase to building；Additionally, embodiment 1-3 is compared, can see
Go out, every test performance of embodiment 3 is superior to other two embodiments, thus embodiment 3 is most preferred embodiment.
Embodiment 4
First in parts by mass：By 1.24 parts of sodium carboxymethylcelluloses, 9.76 parts of carboxylated Graphenes, 4 parts of oxide powder and zincs,
5 parts of activated carbons, 40 parts of nanoscales are slight, and dicalcium powder sends into mixer is sufficiently mixed, and makes powder；Wherein, wherein, carboxyl
The granularity of graphite alkene is 500 mesh, and the granularity of oxide powder and zinc is 300 mesh, and the granularity of activated carbon is 200 mesh, and nanoscale is slightly weighed
The granularity of calcium powder is 1000 mesh.
Then above-mentioned powder is divided into N part according to the quality of individual packaging bag to be evenly distributed in each packaging bag respectively；
Finally, then by the polyester fiber that total amount is 65 mass parts it is divided into N part, evenly distributes after weighing to installing powder
In packaging bag, finished product is made in sealing, and wherein, the length of polyester fiber is 10-15mm, a diameter of 20 m.
Embodiment 5
First in parts by mass：By 1.15 parts of sodium carboxymethylcelluloses, 8.85 parts of carboxylated Graphenes, 5 parts of oxide powder and zincs,
4 parts of activated carbons, 41 parts of nanoscales are slight, and dicalcium powder sends into mixer is sufficiently mixed, and makes powder；Wherein, wherein, carboxyl
The granularity of graphite alkene is 500 mesh, and the granularity of oxide powder and zinc is 300 mesh, and the granularity of activated carbon is 200 mesh, and nanoscale is slightly weighed
The granularity of calcium powder is 1000 mesh.
Then above-mentioned powder is divided into N part according to the quality of individual packaging bag to be evenly distributed in each packaging bag respectively；
Finally, then by the polyester fiber that total amount is 67 mass parts it is divided into N part, evenly distributes after weighing to installing powder
In packaging bag, finished product is made in sealing, and wherein, the length of polyester fiber is 10mm, a diameter of 20 m.
Table 3 below is each component proportion contrast table lattice of embodiment 3-5：
The weight proportion of 3 embodiment 3-5 of table
| Component | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Carboxylated Graphene | 9 | 11 | 10 |
| Oxide powder and zinc | 6 | 4 | 5 |
| Activated carbon | 5 | 5 | 4 |
| Nanoscale is slight dicalcium powder | 42 | 40 | 41 |
| Polyester fiber | 68 | 65 | 67 |
For the performance of the impervious additive of testing example 3-5 concrete anticracking, the concrete anticracking of each embodiment is impervious
Weight of additive adds 1kg finished product additive according in per cubic metre of concrete, then concrete each sample is tested,
Performance test results are shown in Table 4.
The performance test data of the impervious additive of 4 embodiment 3-5 concrete anticracking of table
| Pilot project | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Seepage-resistant grade | 18MPa | 17MPa | 20MPa |
| Infiltration height | 4cm | 3.5cm | 3cm |
| Cracking resistance grade | >=one-level | >=one-level | >=one-level |
| Crack reduces coefficient | 78% | 85% | 90% |
| The waterproofing protection phase | 75 years | 73 years | 80 years |
Conclusion：As can be seen from the above table, the impervious additive of the concrete anticracking of embodiment 3-5, seepage-resistant grade P=17-
20MPa, infiltration height in 3-4cm, cracking resistance grade >=one-level, it is 78%-90% that crack reduces coefficient, the additive of the invention anti-
The water conservation phase is 73-80；Thus, the impervious additive of the concrete anticracking of the present invention greatly strengthen the cracking resistance of concrete and anti-
Performance is oozed, also substantially increases the waterproofing protection phase to building；Additionally, embodiment 3-5 is compared, it can be seen that
Every test performance of embodiment 5 is superior to other two embodiments, thus embodiment 5 is most preferred embodiment.
Embodiment 6
First in parts by mass：By 1.15 parts of sodium carboxymethylcelluloses, 8.85 parts of carboxylated Graphenes, 5 parts of oxide powder and zincs,
4 parts of activated carbons, 41 parts of nanoscales are slight, and dicalcium powder sends into mixer is sufficiently mixed, and makes powder；Wherein, wherein, carboxyl
The granularity of graphite alkene is 600 mesh, and the granularity of oxide powder and zinc is 400 mesh, and the granularity of activated carbon is 300 mesh, and nanoscale is slightly weighed
The granularity of calcium powder is 1200 mesh.
Then above-mentioned powder is divided into N part according to the quality of individual packaging bag to be evenly distributed in each packaging bag respectively；
Finally, then by the polyester fiber that total amount is 67 mass parts it is divided into N part, evenly distributes after weighing to installing powder
In packaging bag, finished product is made in sealing, and wherein, the length of polyester fiber is 10mm, a diameter of 20 m.
Embodiment 7
First in parts by mass：By 1.15 parts of sodium carboxymethylcelluloses, 8.85 parts of carboxylated Graphenes, 5 parts of oxide powder and zincs,
4 parts of activated carbons, 41 parts of nanoscales are slight, and dicalcium powder sends into mixer is sufficiently mixed, and makes powder；Wherein, wherein, carboxyl
The granularity of graphite alkene is 550 mesh, and the granularity of oxide powder and zinc is 350 mesh, and the granularity of activated carbon is 250 mesh, and nanoscale is slightly weighed
The granularity of calcium powder is 1100 mesh.
Then above-mentioned powder is divided into N part according to the quality of individual packaging bag to be evenly distributed in each packaging bag respectively；
Finally, then by the polyester fiber that total amount is 67 mass parts it is divided into N part, evenly distributes after weighing to installing powder
In packaging bag, finished product is made in sealing, and wherein, the length of polyester fiber is 10mm, a diameter of 20 m.
Table 5 below is each component particle size size contrast form of embodiment 5-7：
Each component particle size size of 5 embodiment 5-7 of table
| Component | Embodiment 5 | Embodiment 6 | Embodiment 7 |
| Carboxylated Graphene | 500 mesh | 600 mesh | 550 mesh |
| Oxide powder and zinc | 300 mesh | 400 mesh | 350 mesh |
| Activated carbon | 200 mesh | 300 mesh | 250 mesh |
| Nanoscale is slight dicalcium powder | 1000 mesh | 1200 mesh | 1100 mesh |
For the performance of the impervious additive of testing example 5-7 concrete anticracking, the concrete anticracking of each embodiment is impervious
Weight of additive adds 1kg finished product additive according in per cubic metre of concrete, then concrete each sample is tested,
Performance test results are shown in Table 6.
The performance test data of the impervious additive of 6 embodiment 5-7 concrete anticracking of table
| Pilot project | Embodiment 5 | Embodiment 6 | Embodiment 7 |
| Seepage-resistant grade | 20MPa | 18MPa | 20MPa |
| Infiltration height | 3cm | 3.5cm | 3cm |
| Cracking resistance grade | >=one-level | >=one-level | >=one-level |
| Crack reduces coefficient | 90% | 88% | 90% |
| The waterproofing protection phase | 80 years | 78 years | 82 years |
Conclusion：As can be seen from the above table, the impervious additive of the concrete anticracking of embodiment 5-7, seepage-resistant grade P=18-
20MPa, in 3-3.5cm, cracking resistance grade >=one-level, it is 88%-90% that crack reduces coefficient to infiltration height, the additive of the invention
The waterproofing protection phase is 78-82；Thus, the impervious additive of the concrete anticracking of the present invention greatly strengthen the cracking resistance of concrete and
Anti-permeability performance, also substantially increases the waterproofing protection phase to building；Additionally, embodiment 5-7 is compared, can see
Go out, every test performance of embodiment 7 is superior to other two embodiments, thus embodiment 7 is most preferred embodiment.
Embodiment 8
First in parts by mass：By 1.15 parts of sodium carboxymethylcelluloses, 8.85 parts of carboxylated Graphenes, 5 parts of oxide powder and zincs,
4 parts of activated carbons, 41 parts of nanoscales are slight, and dicalcium powder sends into mixer is sufficiently mixed, and makes powder；Wherein, wherein, carboxyl
The granularity of graphite alkene is 550 mesh, and the granularity of oxide powder and zinc is 350 mesh, and the granularity of activated carbon is 250 mesh, and nanoscale is slightly weighed
The granularity of calcium powder is 1100 mesh.
Then above-mentioned powder is divided into N part according to the quality of individual packaging bag to be evenly distributed in each packaging bag respectively；
Finally, then by the polyester fiber that total amount is 67 mass parts it is divided into N part, evenly distributes after weighing to installing powder
In packaging bag, finished product is made in sealing, and wherein, the length of polyester fiber is 15mm, a diameter of 25 m.
Embodiment 9
First in parts by mass：By 1.15 parts of sodium carboxymethylcelluloses, 8.85 parts of carboxylated Graphenes, 5 parts of oxide powder and zincs,
4 parts of activated carbons, 41 parts of nanoscales are slight, and dicalcium powder sends into mixer is sufficiently mixed, and makes powder；Wherein, wherein, carboxyl
The granularity of graphite alkene is 550 mesh, and the granularity of oxide powder and zinc is 350 mesh, and the granularity of activated carbon is 250 mesh, and nanoscale is slightly weighed
The granularity of calcium powder is 1100 mesh.
Then above-mentioned powder is divided into N part according to the quality of individual packaging bag to be evenly distributed in each packaging bag respectively；
Finally, then by the polyester fiber that total amount is 67 mass parts it is divided into N part, evenly distributes after weighing to installing powder
In packaging bag, finished product is made in sealing, and wherein, the length of polyester fiber is 12mm, a diameter of 22 m.
Table 7 below is the polyester fiber form size contrast form of embodiment 7-9：
7 embodiment 7-9 polyester fiber form size of table
| Polyester fiber | Embodiment 7 | Embodiment 8 | Embodiment 9 |
| Length | 10mm | 15mm | 12mm |
| Diameter | 20µm | 25µm | 22µm |
For the performance of the impervious additive of testing example 7-9 concrete anticracking, the concrete anticracking of each embodiment is impervious
Weight of additive adds 1kg finished product additive according in per cubic metre of concrete, then concrete each sample is tested,
Performance test results are shown in Table 8.
The performance test data of the impervious additive of 8 embodiment 7-9 concrete anticracking of table
| Pilot project | Embodiment 7 | Embodiment 8 | Embodiment 9 |
| Seepage-resistant grade | 20MPa | 19MPa | 22MPa |
| Infiltration height | 3cm | 3.5cm | 3cm |
| Cracking resistance grade | >=one-level | >=one-level | >=one-level |
| Crack reduces coefficient | 90% | 88% | 90% |
| The waterproofing protection phase | 82 years | 74 years | 82 years |
Conclusion：As can be seen from the above table, the impervious additive of the concrete anticracking of embodiment 7-9, seepage-resistant grade P=19-
22MPa, in 3-3.5cm, cracking resistance grade >=one-level, it is 88%-90% that crack reduces coefficient to infiltration height, the additive of the invention
The waterproofing protection phase is 74-82；Thus, the impervious additive of the concrete anticracking of the present invention greatly strengthen the cracking resistance of concrete and
Anti-permeability performance, also substantially increases the waterproofing protection phase to building；Additionally, embodiment 7-9 is compared, can see
Go out, every test performance of embodiment 9 is superior to other two embodiments, thus embodiment 9 is most preferred embodiment.
In order to contrast the performance of the impervious additive of concrete anticracking of the present invention, will be impervious for the concrete anticracking of 1kg of the present invention
Additive is added in one cubic metre of concrete, and is reference examples 1 using normal concrete, and reference examples 2 are mixed at per cubic metre
Add 1kg micro-expanding agent and polypropylene anti-crack fiber in solidifying soil, then each concrete is tested.
The performance test results are as shown in table 9.
The impervious additive of the concrete anticracking of the present invention of table 9 and the performance test data of reference examples
| Pilot project | The present invention | Reference examples 1 | Reference examples 2 |
| Seepage-resistant grade | P ＞ 15MP | P ＜ 6 | P=6～8 |
| Infiltration height | 3～4.5cm | ＞ 5cm | ＞ 5cm |
| Cracking resistance grade | >=one-level | ＜ three-level | ＜ one-level |
| Crack reduces coefficient | ＞ 70%～90% | ＜ 30% | ＜ 70% |
| The waterproofing protection phase | ＞ 70 years | 3～5 years | 3～5 years |
Note：Reference examples 1 and reference examples 2 plus outer waterproof roll, the waterproofing protection phase is 3-5, and additive of the present invention is anti-
Water conservation phase and building same life-span.
Conclusion：As can be seen from the above table, the impervious additive of the concrete anticracking of the present invention, seepage-resistant grade P ＞ 15MPa, oozes
Water height reduces coefficient >=70%, the waterproofing protection phase ＞ of the additive of the invention in 3-4.5cm, cracking resistance grade >=one-level, crack
70 years；Thus, the impervious additive of the concrete anticracking of the present invention greatly strengthen cracking resistance and the anti-permeability performance of concrete, also significantly
Improve the waterproofing protection phase to building.
General principle and principal character and the advantages of the present invention of the present invention has been shown and described above.The skill of the industry
Simply explanation of the art personnel it should be appreciated that the present invention is not restricted to the described embodiments, described in above-described embodiment and specification
The principle of the present invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these
Changes and improvements are both fallen within scope of the claimed invention.The claimed scope of the invention by appending claims and
Its equivalent thereof.
Claims (3)
1. the impervious additive of a kind of concrete anticracking, it is characterised in that：The constituent of the additive is in parts by mass：
Carboxyl class material 9-11 part；
Oxide powder and zinc 4-6 part；
Activated carbon 4-5 part；
Nanoscale is slight dicalcium powder 40-42 part；
Polyester fiber 65-68 part；
Wherein, described carboxyl class material is mixed by sodium carboxymethylcellulose and carboxylated Graphene, carboxymethylcellulose calcium
Sodium is 1 with the mass ratio of carboxylated Graphene:7.2～8.2, and sodium carboxymethylcellulose is granularity with carboxylated Graphene and is
Powder between 500-600 mesh；The granularity of described oxide powder and zinc is 300-400 mesh；Described activated carbon choice of powder shape,
Its granularity is 200-300 mesh；The granularity of described nanoscale is slight dicalcium powder is 1000-1200 mesh；Described polyester fiber, its
Length is 10-15mm, a diameter of 20-25 m.
2. the impervious additive of concrete anticracking according to claim 1, it is characterised in that：Carboxylic in described carboxyl class material
Sodium carboxymethylcellulose pyce is 1 with the mass ratio of carboxylated Graphene:7.7.
3. a kind of preparation method of the impervious additive of concrete anticracking described in claim 1, it is characterised in that：The preparation side
Method comprises the steps：By the sodium carboxymethylcellulose for measuring and carboxylated Graphene, oxide powder and zinc, activated carbon and nanoscale
Slight dicalcium powder is sent into mixer and is mixed, and metering as needed is assigned in packaging bag, then required polyester fiber is measured
Put into and installed sealing as finished product in pulvis bag.
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| CN106517933A (en) * | 2016-10-13 | 2017-03-22 | 浙江长兴恒基科技有限公司 | Anti-seepage filled-type lightweight aggregate thermal insulation concrete and preparation process thereof |
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